Seroprevalence and indexes of IgG antibodies for SARS-CoV-2 infection among People Living With HIV, tuberculosis patients and healthcare workers, in Salvador, Brazil Daniele Souza de Santana; Eduardo Martins Netto; Sara Nunes Vaz; Paulo Henrique Dantas; Carlos Brites;

Travestis, transgender women and young MSM are at high risk for PrEP early loss to follow-up in Rio de Janeiro, Brazil Amanda Echeverría-Guevara; Lara E. Coelho; Valdiléa G. Veloso; Maria C. Pimenta; Brenda Hoagland; Ronaldo I. Moreira; Iuri Leite; Emília M. Jalil; Sandra W. Cardoso; Thiago S. Torres; Beatriz Grinsztejn;

Risk factors for neurosyphilis in HIV patients: A retrospective cohort study Beatriz Arns; Tarsila Vieceli; Eduardo Gomes; Mariana Horn Scherer; Luisa Nakashima; Maria Luisa Santos; Ronara Blos Hepp; Fernanda Greinert; Maria Helena Rigatto;